ghsa-x3w4-q7cr-j86p
Vulnerability from github
Published
2025-10-22 18:30
Modified
2025-10-22 18:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_qca: Use del_timer_sync() before freeing

While looking at a crash report on a timer list being corrupted, which usually happens when a timer is freed while still active. This is commonly triggered by code calling del_timer() instead of del_timer_sync() just before freeing.

One possible culprit is the hci_qca driver, which does exactly that.

Eric mentioned that wake_retrans_timer could be rearmed via the work queue, so also move the destruction of the work queue before del_timer_sync().

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2022-49555"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-02-26T07:01:31Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_qca: Use del_timer_sync() before freeing\n\nWhile looking at a crash report on a timer list being corrupted, which\nusually happens when a timer is freed while still active. This is\ncommonly triggered by code calling del_timer() instead of\ndel_timer_sync() just before freeing.\n\nOne possible culprit is the hci_qca driver, which does exactly that.\n\nEric mentioned that wake_retrans_timer could be rearmed via the work\nqueue, so also move the destruction of the work queue before\ndel_timer_sync().",
  "id": "GHSA-x3w4-q7cr-j86p",
  "modified": "2025-10-22T18:30:32Z",
  "published": "2025-10-22T18:30:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-49555"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2717654ae022e6ea959a4b7b762702fe1a4690c2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/37d17f63d085d601011964ade7371aeebeb6ed4b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4989bb03342941f2b730b37dfa38bce27b543661"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/72ef98445aca568a81c2da050532500a8345ad3a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/db03727b4bbbbb36e6ef4cb655c670eefb6448e9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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